/*
 * Copyright 2023-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.cloud.ai.rag.retrieval.search;

/**
 * Enumeration of retriever types.
 *
 * @author benym
 * @since 1.1.0.0-SNAPSHOT
 */
public enum RetrieverType {

    /**
     * BM25 Retriever Type
     */
    BM25,

    /**
     * KNN Retriever Type
     */
    KNN,

    /**
     * Hybrid Retriever Type (BM25 + KNN)
     */
    HYBRID
}
